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Electromagnetic Field Theory

Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

 4.32.
 Zero.
  2.16.
 Infinity.

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Electromagnetic Field Theory
Magnetic current is composed of which of the following?

None of these
 Only conduction current.
 Only displacement current.
 Both conduction and displacement current.

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Electromagnetic Field Theory
A sphere of radius with a uniform charge density ρv C/m3 shall have electric flux density at radius “r = a” equal to

 aρv/3 C/m2.
 aρv/4 C/m2.
 aρv C/m2.
 ρv/3 C/m2.

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Electromagnetic Field Theory
A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Active satellite
Passive satellite
Orbiting satellite
Geostationary satellite

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Electromagnetic Field Theory
Fleming's right hand rule may be applied to an electric generator to find out the direction of

 magnetic field.
 induced emf.
None of these
 rotor rotation.

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Electromagnetic Field Theory
For a linear electromagnetic circuit, which of the following statement is true?

 Field energy is lesser than the co-energy.
 Co-energy is zero.
 Field energy is equal to the co-energy.
 Field energy is greater than the co-energy.

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